test-cluster: fix slot count arg
test-cluster: fix slot count arg

bitly/doozerd,soundcloud/doozerd,coreos/doozer,rowhit/doozerd,npchp110/doozer,jmptrader/doozerd,npchp110/doozerd,ha/doozer,coreos/doozerd,tempbottle/doozerd,soundcloud/doozer,tempbottle/doozerd,npchp110/doozerd,magastzheng/doozerd,zyxar/doozerd,zyxar/doozerd,magastzheng/doozerd,coreos/doozerd,ylong/doozerd,jmptrader/doozer,jmptrader/doozerd,ha/doozerd,zyxar/doozerd,npchp110/doozerd,zyxar/doozerd,tempbottle/doozerd,magastzheng/doozerd,ylong/doozerd,bitly/doozerd,soundcloud/doozerd,soundcloud/doozerd,rowhit/doozerd,rowhit/doozerd,tempbottle/doozerd,rowhit/doozerd,jmptrader/doozerd,magastzheng/doozerd,bitly/doozerd,soundcloud/doozer,ha/doozerd,jmptrader/doozerd,ylong/doozerd,ha/doozerd,soundcloud/doozerd,ylong/doozerd,npchp110/doozerd,coreos/doozerd